Helms' rhymes with:
helmes, helms, elmes, elms, helmes, helms, nelms, overwhelms, realms, alms, barthelme's, elmes, elms, film's, films, helmes, helms, hilmes, nelms, overwhelms, psalms, quilmes, realms, stockholm's, wilhelms, willms, wilmes, wilms
Helms' sounds like:
hailing, halling, hallums, halmos, hauling, healing, heeling, heileman's, helen's, helena's, helens, heling, helinski, hellams, hellenic, hellenize, hellenizes, helling, hellums, helmes, helmich, helmick, helmig, helming, helminiak, helminski, helmke, helms, helms's, hilemon's, hilinski, hillians, hilling, hilmes, holewinski, holiness, holing, holliman's, holling, hollings, hollins, hollowing, holmes, holmes's, holness, hoolihan's, houlihan's, howling, huling, hulings, hulon's